Definition of pyrenomycete in US English:

pyrenomycete

noun

Mycology
  • A fungus of the former class Pyrenomycetes. In later use: a fungus having the flask-shaped fruiting body characteristic of this class.

adjective

Mycology
  • Of, relating to, or resembling fungi of the former class Pyrenomycetes.

Origin

Late 19th century; earliest use found in Henry Garnsey (1826–1903). From scientific Latin Pyrenomycetes Pyrenomycetes, as an inferred singular form.